package com.xzy.utils;

import org.springframework.stereotype.Component;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
import java.util.Set;
@Component
public class HttpTool {
    public String sendGet(String url,String params){
        String urlName=url+"?"+params;
        BufferedReader reader=null;
        URL urlR=null;
        try {

            urlR = new URL(urlName);
            URLConnection connection = urlR.openConnection();
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            connection.setRequestProperty("api-key","Vn8rjhVnerKnpQ=WwwNOU3=ve=A=");
            connection.setRequestProperty("Content-Type","application/json");
            connection.connect();
//            Map<String, List<String>> headerFields = connection.getHeaderFields();
//            Set<String> strings = headerFields.keySet();
//            for (String str : strings){
//                List<String> strings1 = headerFields.get(str);
//                System.out.println(str+":"+strings1);
//            }
            reader= new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line=null;
            StringBuilder result=new StringBuilder();
            while((line=reader.readLine())!=null){
                result.append(line);
            }
            return result.toString();
        } catch (Exception e) {
            e.printStackTrace();
        }finally {
            try{
                if(reader!=null){
                    reader.close();
                }
            }catch (Exception e){
                e.printStackTrace();
            }

        }
        return null;
    }

    public String sendPost(String url, String param,String data) {
        OutputStreamWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            url=url+"?"+param;
            URL realUrl = new URL(url);
            HttpURLConnection conn = null;
            conn = (HttpURLConnection) realUrl.openConnection();
            // 打开和URL之间的连接

            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setRequestMethod("POST");    // POST方法
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            conn.setRequestProperty("api-key","Vn8rjhVnerKnpQ=WwwNOU3=ve=A=");
            conn.setRequestProperty("Content-Type","application/json");
            conn.connect();

            // 获取URLConnection对象对应的输出流
            out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
            // 发送请求参数
            out.write(data);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！"+e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
        return result;
    }
}
